July 10, 2020
July 10, 2020



Grade : Technical
Form : Solid
Spec. No : PR/PAC/20/05-00
Other Trade Name : Phosphonic acid/ Orthophosphorous acid
Dihydroxyphosphine oxide
CAS NO. : 13598-36-2
UN No. : 2834
Chemical Formula : H3PO3
Molecular Weight : 82.0g/mol
Class : 8
Packing Group : III
Appearance : white or yellowish crystalline solid, hygroscopic
Purity (%) : 88 min
Chloride (ppm) : 0.01 max
Sulphate (ppm) : 0.01 max
Phosphate (%) : 0.2 max
Iron (ppm) : 50 max
Lead (%) : 0.001 max
Packing: 50 Kg net in HDPE drums
Applications : Phosphorous acid is used to produce phosphonates like ATMP, HEDP, PBTC which are used
as scale inhibitor or corrosion inhibitors in water treatment.
It is also used in preparing PMIDA which is a very important intermediate
of herbicide glyphosate.
It is used to prepare phosphite salts which are used in controlling microbial plant diseases.

Safety and Handling : Refer Safety Data Sheet
Technical Service : For technical assistance, pricing and further information, please contact us through
E-mail at – ;


Information herein is given in good faith. Prasol Chemicals Pvt. Ltd. makes no representations or warranties as to the completeness or accuracy thereof. Information is supplied upon the condition that the persons receiving the same will make their own determination as to its suitability for their purpose prior to use. Prasol Chemicals Pvt. Ltd. shall not be responsible for damages of any nature whatsoever resulting from the use or reliance upon this information. The data provided are based on samples tested and are not guaranteed for all samples or applications. Such data are intended as guides only. No representations or warranties for a particular purpose or any other nature are made with respect to this information or the product.

Office : ‘PRASOL HOUSE’, Plot No. A-17/2/3, T. T. C. Indl. Area, Khairne M. I. D. C., Navi Mumbai – 400 710, M.S., India.
Tel : +91-22- 2778 2555/61952500 Fax : +91-22- 61952577

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